Furnace



N0- 622,5l8- Patented Apr. 4, I899.

W. MCCLAVE.

FURNACE.

(Application filed Sept. 12, 1898.) (No Model.) 7 2 Shear-Shun l.

WITNESSES No. 622,5l8. Patented Apr. 4, 1899. w. McCLAVE.

FURNACE.

(Application filed Sept. 12, 1898.) (No Model.) '2 ShaataSlf1eet 2.

WITNESSES INVENTOR "m: "dams PETERS cu, PMoYo-umov WASHINGTON. 0. c4

- rvrrn PATENT trier",

FURNACE.

SPECIFICATION forming part of Letters Patent No. 622,518, dated April 4,1899.

Original application filed May 10, 1898, Serial No. 680,272. Divided andthis application filed Se te b 12, 1893, s i l No 690,789. (No model-)To (11 whom it may concern.- I

Be it known that I, WILLIAM MCCLAVE, a citizen of the United States,residing at Scranton, in the county of Lackawanna and State ofPennsylvania, have invented certain new and useful Improvements inFurnaces; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to improvements in furnaces; and it consists in thecombination, with a furnace, of a movable floor adapted to bridge thespace between the coal-bin or fuelfloor and the front of the furnace andmeans for moving the said floor back out of the way to permit of theashes being removed from the ash-pit; and it also consists in certaindetails of construction, combination, and arrangement of parts, as willbe hereinafter described and claimed.

In the accompanying drawings,Figure 1 represents alongitudinal verticalsection through a movable floor and fuel bin or floor constructed inaccordance with my invention, the same being shown in connection with afurnace, which latter is not claimed under this application; and Fig. 2is a cross -section through the ash-receiving space in front of thefurnace and showing the mechanism for operating the sliding floor.

In the accompanying drawings, 1 represents a movable floor; 2, anash-pit; 3, a coal-floor, and a a furnace,

I make no claim under this application to the specific construction ofthe inclined grate and the means for operating the same, as the sameforms the subject of an application filed by me on the 10th of May,1898, Serial No. 680,272, of which this application is a division, norto the specific construction and arrangement of the hopper, as the sameforms the subject of an application filed by me on the 12th day ofSeptember, 1898, Serial No. 690,790.

In constructing a furnace having an inclined grate the inclination ofthegrate nearly always necessitates the constructing of an ashpit whichextends a considerable distance below the floor-surface, and it isnecessary to provide a suflioient room for hoeing or draw ing the ashesup out of the ash-pit and removing the same at necessary intervals. Thisusually necessitates the forming of the floorline immediately in frontof the furnace at such a distance below the feed-hopper that it isnecessary for the attendant to shovel the coal from the coal bins orheaps over the wide intervening space to reach the hopper. To correctthis difficulty, I have conceived the idea of placing a receding floorin front of the furnace, so as to bridge the space between the coalfloor or bin and the front of the furnace. As shown in the drawings, thecoalfloor.3 is arranged at a suitable height with respect to the hopper,and between it and the front 5 of the furnace is a traveling floor,as 1. The fioor 1 preferably consists of I-beams or other suitableangle-irons, bolted together to form a substantial structure, and platesor flooring secured to the top of the same to form a floor-surface andis carried by wheels, as 6. The Wheels 6 engage tracks 7, mounted uponsuitable brickwork upon either side of the floor 1. To the under side ofthe floor 1 is also secured a rack-bar, as 8,which is adapted to beengaged by a pinion, as 9, secured to the end of a shaft 10. To theother end of the shaft 10 is secured a bevel-gear 11, which meshes witha corresponding bevel-gear 12, secured to the lower end of anoperating-shaft, as 13. 'The operating-shaft 13 extends up through thecoal-floor 3 and finds a bearing at its upper end in a standard, as 14.A hand-wheel or other operating means, as 15, is secured to the upperend of the vertical shaft 13, and by turning the same the rack 9 can berotated to run the floorl back and forth upon its tracks. The shaft 10is mounted in bearings, as 10, secured to the foundations of thecoal-floor By operating the hand-wheel 15 in one way the floor can berun back beneath the coalfloor 3, and the space 17 below the said floorwill be thus opened, so that the attendant can get to the ash-doors 18and by opening the same pull the ashes out of the ash-pit and removethem. When this has been done, by turning the hand-Wheel 15 in theopposite direction the floor 5 can be again run out from beneath thefloor 3 and bridge the space be tween the coal-bin and the front of thefur nace hopper. This is of great importance in shoveling coal from thecoal-floor to the hop- ICC per, as the attendant can stand upon thefloor- 1, and thus easily reach the hopper of the fur-' nace and nothave to pitch the fuel from the end of the floor 3 over to the hopper.

Having 110w described my invention, what- 8. The combination with afurnace, of a stationary fuel-floor having a space beneath it, ahorizontally-arranged movable floor provided with Wheels and located infront of the furnace and over an ash-removing space, a track for thefloor to travel on, means for moving the floor out and in, said meanscomprising a vertically-arranged shaft provided on its lower end with abeveled gear which meshes with a beveled gear on thehorizontally-arranged shaft, which shaft is provided on its other endwith a pinion, and a rack attached to the underside of thefioor which isengagedby said pinion, substantially as described In testimony whereof Ihereunto affix my signature in presence of two" witnesses.

JOHN J. HURLEY, JOHN 1?. BUTLER,

